MFC 常用系统函数

1、获取当前路径：

    char path[MAX_PATH];    GetCurrentDirectoryA(MAX_PATH,path);
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2、获取系统时间
需要添加头文件：#include <Windows.h>

    SYSTEMTIME sysTime;    GetLocalTime(&sysTime);    printf("%4d%02d%02d%02d%02d",sysTime.wYear,sysTime.wMonth,sysTime.wDay,sysTime.wHour,sysTime.wMinute);
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3、打开文件对话框

    char pFileName[MAX_PATH];     int nPos = GetCurrentDirectoryA( MAX_PATH, pFileName);     CString defaultDir =L"\\";   //默认打开的文件路径      CString fileName(pFileName);         //默认打开的文件名      CFileDialog dlg(TRUE, //TRUE为OPEN对话框，FALSE为SAVE AS对话框        defaultDir,         fileName,        OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,        (LPCTSTR)_T("XML Files (*.xml)|*.xml||"),        NULL);    CString m_ProjectPath;    if(dlg.DoModal()==IDOK)    {        m_ProjectPath=dlg.GetPathName(); //文件名保存在了FilePathName里    }
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4、保存文件对话框

   BOOL isOpen = FALSE;        //是否打开(否则为保存)     char pFileName[MAX_PATH];     int nPos = GetCurrentDirectoryA( MAX_PATH, pFileName);     CString defaultDir =L"\\";   //默认打开的文件路径      CString fileName(pFileName);         //默认打开的文件名      CString filter = L"文件 (*.xml)|*.xml||";   //文件过虑的类型      CFileDialog openFileDlg(isOpen, defaultDir, fileName, OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT, filter, NULL);      openFileDlg.GetOFN().lpstrInitialDir = L"";     if (openFileDlg.DoModal() == IDOK)    {        CString filePath = defaultDir +"\\"+fileName;        filePath = openFileDlg.GetPathName();    }
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